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Sugilite
Sugilite

Zircon
Zircon



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Sugilite
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Zircon

Sugilite and Zircon Optical Properties

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Optical Properties

Luster

Vitreous
Adamantine

Pleochroism

Weak
Weak

Dispersion

0.020.04
0.005 1
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Transparency

Translucent
Transparent

Refractive Index

1.607-1.6121.810-2.024
1 3.25
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Optic Character

-
-

Crystal System

Hexagonal
tetragonal

Birefringence

0.0030.047-0.055
0 0.296
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Clarity

Translucent
Transparent

Sugilite and Zircon Optic Character

Sugilite and Zircon optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Sugilite and Zircon Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Sugilite and Zircon optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Sugilite and Zircon Transparency

Similar to their colors, Sugilite and Zircon transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Sugilite is Translucent while Sugilite is Translucent in appearance.